Age, that brings a dwindling to most forms of life, is at its most majestic in the trees. I have seen living olives that were planted when Caesar was in Gaul. I remember, in Illinois woods, a burr oak which was bent over as a sapling a hundred years ago, to mark an Indian portage trail, and the thews in that flexed bough were still in the prime of life. Compared to that, the strongest human sinew is feeble and quick to decay. Yet structure in both cases is cellular; life in both is protoplasmic. A tree drinks water as I do, and breathes oxygen. There is the difference that it exhales more oxygen than it consumes, so that it sweetens the air where it grows. It lays the dust and tempers the wind. Even when it is felled, it but enters on a new kind of life. Sawn and seasoned and finished, it lays bare the hidden beauty of its heart, in figures and grains more lovely than the most premeditated design. It is stronger, now, than it was in the living tree, and may bear great strains and take many shapes.